ancestral

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My friends always ask me this question and I don't know how to answer them. They want to know why we left our ancestral house.
我的朋友都问我这个问题，不过我不知道怎么回答，他们都问，为什么我们离开我们祖先的房子到这里来呢？
Within the national park are more than five thousand ruins from the time of the Ancestral Puebloan people. Six hundred are cliff dwellings.
在这个国家公园里，从普韦布洛人祖先开始，这里拥有五千多处遗迹，有六百多处是崖居人的遗迹。
These original ‘proto-languages’—from which all others allegedly have developed—were distinct within themselves, with no previous ancestral language.
这些原始的“前语言”——其他语言从其演化而来——各自截然不同，根本不再有更前面的祖先语言。

The ancestral Pueblo people used stone tools to widen the small natural openings in the face of the canyon walls.
There's a lot of frying going on at this particular place and this is something that's not typical of ancestral human diets.
在这个国家,有很多油炸食品,这不是我们祖先的日常饮食
耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选
There are some people who have talked about returning to an ancestral diet.
有一些人主张要,回归祖先的饮食文化
耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Meantime, Innu and Inuit groups claimed the nickel deposit lay on their ancestral land.
FORBES: Magazine Article

You use ancestral to refer to a person's family in former times, especially when the family is important and has property or land that they have had for a long time.